Matched-pair total knee arthroplasty retrieval analysis: oxidized zirconium vs. CoCrMo. Academic Article Article uri icon

Overview

MeSH

  • Cohort Studies
  • Equipment Failure Analysis
  • Female
  • Humans
  • Male
  • Matched-Pair Analysis
  • Middle Aged
  • Oxidation-Reduction
  • Polyethylene
  • Reoperation

MeSH Major

  • Arthroplasty, Replacement, Knee
  • Chromium Alloys
  • Knee Prosthesis
  • Prosthesis Design
  • Prosthesis Failure
  • Zirconium

abstract

  • Oxidized zirconium (OxZr) was introduced to serve as a ceramic surface for femoral components in TKA. The aim of this study was to compare retrieved OxZr components and corresponding PE inserts in matched comparison with conventional cobalt/chrome/molybdenum alloy (CoCrMo). Eleven retrieved posterior stabilized TKA with an OxZr femoral component were included. This included 6 implants from an earlier preliminary study. From a cohort of 56 retrieved TKA with conventional CoCrMo femoral components, pairs were matched according to duration of implantation, patient age, reason for revision, and BMI. Polyethylene inlays and femoral components were optically scored for in vivo damage. The average damage score of the tibial PE inserts was significantly lower with OxZr components (p=0.01). Mainly burnishing and scratches were found. The average wear score in the visual analysis of the femoral components was significantly lower for the OxZr as well (p=0.005). Femoral components made of OxZr were less sensitive to in vivo damage and corresponding PE inlays also showed less damage than CoCrMo components. Copyright © 2010 Elsevier B.V. All rights reserved.

publication date

  • December 2011

has subject area

  • Arthroplasty, Replacement, Knee
  • Chromium Alloys
  • Cohort Studies
  • Equipment Failure Analysis
  • Female
  • Humans
  • Knee Prosthesis
  • Male
  • Matched-Pair Analysis
  • Middle Aged
  • Oxidation-Reduction
  • Polyethylene
  • Prosthesis Design
  • Prosthesis Failure
  • Reoperation
  • Zirconium

Research

keywords

  • Comparative Study
  • Journal Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1016/j.knee.2010.08.011

PubMed ID

  • 20869251

Additional Document Info

start page

  • 448

end page

  • 452

volume

  • 18

number

  • 6